Coverage for /pythoncovmergedfiles/medio/medio/usr/local/lib/python3.11/site-packages/selkies/webrtc/utils.py: 81%

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4# 

5# This file incorporates work covered by the following copyright and 

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8# Copyright (c) Jeremy Lainé. 

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33 

34import os 

35from struct import unpack 

36 

37 

38def random16() -> int: 

39 return unpack("!H", os.urandom(2))[0] 

40 

41 

42def random32() -> int: 

43 return unpack("!L", os.urandom(4))[0] 

44 

45 

46def uint16_add(a: int, b: int) -> int: 

47 """ 

48 Return a + b. 

49 """ 

50 return (a + b) & 0xFFFF 

51 

52 

53def uint16_gt(a: int, b: int) -> bool: 

54 """ 

55 Return a > b. 

56 """ 

57 half_mod = 0x8000 

58 return ((a < b) and ((b - a) > half_mod)) or ((a > b) and ((a - b) < half_mod)) 

59 

60 

61def uint16_gte(a: int, b: int) -> bool: 

62 """ 

63 Return a >= b. 

64 """ 

65 return (a == b) or uint16_gt(a, b) 

66 

67 

68def uint32_add(a: int, b: int) -> int: 

69 """ 

70 Return a + b. 

71 """ 

72 return (a + b) & 0xFFFFFFFF 

73 

74 

75def uint32_gt(a: int, b: int) -> bool: 

76 """ 

77 Return a > b. 

78 """ 

79 half_mod = 0x80000000 

80 return ((a < b) and ((b - a) > half_mod)) or ((a > b) and ((a - b) < half_mod)) 

81 

82 

83def uint32_gte(a: int, b: int) -> bool: 

84 """ 

85 Return a >= b. 

86 """ 

87 return (a == b) or uint32_gt(a, b)